Avoidance can be for a variety of reasons; a feeling of being overwhelmed already, not knowing what to do or a feeling of inadequacy that they are masking. Meetings are part of directed time usually and cannot be avoided, therefore, go and find them and ask them. Explain the importance of the meetings and the value in terms of reducing individual work load in thelong term. See if there is any impediment in their attendance - then insist. If they still don't respond or attend you need to speak to your line manager for the next steps. In terms of the scheme of work, set aside some time to plan together to make your expectations clear or sit down and look at their 'to do' list that you can see what the block is. Having come from a business background myself I would still suggest that a more supportive approach to begin with will avoid the unecessary trouble that early and aggressive action would inevitable create. Your job is to support and guide ... you are a teacher, employ the skills you have to get the best out of your students with your staff, no one wants to be rubbish!!!